Improvement in machine for bending wood



iitlntrd mes met (tithe.

` the pulley bl.

HENRY HNIoHoLs, or Kansai/ILLE, New YORK, AssicNon, ro

P. S. WHITCOMB,

OFY vSAME PLACE.

Letters Patent No. 95,037, dated September 21, 1869.

` IMPROVEMENT IN MACHINE FOR BENDING- WOOD.

. Y WM j The Schedulereferred to in these Letters Patent and making partof the same.

Toall whom ,it may concern.-

Be it known that I, HENRY H. NICHOLS, of Keescville, in the county ofEssex, and State of New York, have invented a new and improved Machinefor Bending Wood; and I dohereby declare that the following is a fulland exact description ofthe same, reference being had to theaccompanying drawings, and to the letters of reference marked thereon.

This invention relates to certain improvements inA machines for bendingwood, whereby the operation is in a measure automatically regulated,andthe machine` adapted to bending different forms, as will hereinaftermore fully appear.,

`In the drawings- I i Figure 1 is aiplan viewof my invention.

Figure 2, a side elevation.

Figure 3, an end elevation,

Figure 4, a sectional view, through liuex x, iig. 1.

Figure 5,-a perspective view of the strip h.

Figure (i, a perspective view of one of the heads el.

The frame-work of my invention .consists of the uprights A, longitudinalbeams A* A?, and crossbeams a. Y

Between the beams A2 is the longitudinal screwshaft B, which passes`through a fixed nut outhe un- ,der side ofthe transverse carriage B,which moves in suitable ways betweenthe beams A2.

Thel screw'- shaft revolves in bearings B2, B,

-and B4.

Between the bearings 1?3 and B4 are the pulleys b b1 b2, of which thepulley bl is fixed'on thel shaft B, the others being loose or idle. v

The shaft B is operated. by means of a belt around' One ofthe pulleysbor b2 has also a belt running inan opposite direction to that on ,thepulley b1; r .p l i C represents a transverse platform, on which is theform G1, "which may be removed at will, and a different` onesubstituted. p j y p .Cz C2 represent arms or connecting-rods, which areprovided, at their, rear ends, with thel longitudinal slots c,throughwhich pass the set-screws c1, into nuts on the 'screw-shaftsci,which work in the slots I) of the carriageB.

D. represents a strip of elastic metal, the ends of whichI are attachedto. heads d, which latter are lpivoted to the forward ends of the armsC, and are provided with the projections (Il.

The strip D is attached, at its centre, to an upright piece, d", ofmetal, which passes through a slot, el, in the platform O, andisthenbeut at right angles, and passes forward under the platform, andis again bent downward, and attached to the rope E, which passes overthe pulley E', and thence downward to` the i treadle e.

The piece l2 is drawn back to place bjithe elastic spring (P.

F represents a longitudinal rod, which is pivotcd to the swinging armsl1", and is prtwidcd, at suitable points, with the adjustableprojections f j'.

f is a projection on the under side of the carriage B, \vhich,las thelat-ter moves along its course, comes in contact with the projectionsj,and moves the rod E forward or backward.

At the rear end of the rod l is a projection, which, when the rod ismoved in either direction, removes the belts from one pulley to another.

H represents a vertical cross-head, which slides up .and down indovetailcd grooves, and is provided, at its upper edge, with a groove,in which is placed a strip ot' wood or metal, h, of thcV form shown infig. 5, which contines the edge of thewood which is bent.

The cross-head H is provided with springs, by whiehf it is forced up toa level witl1.the platform C.

The operation of my invention is asfollows:

The screw-shaft is revolved by the pulley b1 in u direction to propelthe carriage toward the platform O. 'lhe wood to be bent isitheu placedbetween the strip iD' and the form, thc ends being confined `by theprojections di, and as the carriage moves the arms C'l force the headscl forward, and cause the strip 1) to alssuine a semicircular form, orone corrcspomling-to the form G1, or otherwise. p The wood is held,firmly by depressing the treadle,

`which causes the strip D' to press the wood closely against ,the form.

\Vhen the; wood has been bent to the desired form, and the heads dproject over the edge of the platform, the' strip lt-is pushed up by thecross-head H, andthe projections on its ends placed over the ends of thewood, vthereby holding the. same when the form is removed aud thecarriage withdrawn.

lThe form is held by a projection, l, ou the platform. v

W'hen thc carriage has advanced*suliicieutly1hr, the

4 projection j" strikes the forward projection j', thereby ,causing therod F to move forward, andthe proj ection. on the rear cud of the rod tomove the belt ou thcpulley b1 to the pulley b, and from the,pulley b'lto the pulley b1. p j l i i It will be remembered that the latter beltrevolves inan opposite direction from the former, and therefore causesthe pulley b1 to revolve iu an opposite direction, and reverses themotion of the carriage, which runs backward until its projection reachesthe rear projection fwhen the belts are moved back, and the carriagemoves forward. i

The arms C2 may be regulated for bending different foi-ins, Yby turningthc screw-shafts ci, thereby changing thepoiut on which they bear.

Having thus fully described my invention, and cross-head H, arranged andoperated substantially What I claim as new, and desire to secure byLetas described. 1 ters Patent of the United States, is- Thisspecification signed and witnessed, this 2d day l. The combination ofthe bent piece d2, spring d, of February, 1869.

rope E, and treadle e, as and for the purpose de- HENRY H. NICHOLS.

scribed.

2. The combination of the parts described, consist- Witnesses: ing ofthe beams A A1, carriage B1, screw-shaft B, A. S. BABBIT, pulleys b blb", platform O, arms C2, strip D', form C, W. LANSING.

